EC - EGF-domain serine glucosyltransferase

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IntEnz Enzyme Nomenclature


Accepted name:
EGF-domain serine glucosyltransferase
Systematic name:
UDP-α-D-glucose:[protein with EGF-like domain]-L-serine O-β-glucosyltransferase (configuration-inverting)



The enzyme, found in animals and insects, is involved in the biosynthesis of the α-D-xylosyl-(1→3)-α-D-xylosyl-(1→3)-β-D-glucosyl trisaccharide on epidermal growth factor-like (EGF-like) domains. Glycosylation takes place at the serine in the C-X-S-X-P-C motif. The enzyme is bifunctional also being active with UDP-α-xylose as donor (EC When present on Notch proteins, the trisaccharide functions as a modulator of the signalling activity of this protein.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0140561


  1. Li, Z., Fischer, M., Satkunarajah, M., Zhou, D., Withers, S. G., Rini, J. M.
    Structural basis of Notch O-glucosylation and O-xylosylation by mammalian protein-O-glucosyltransferase 1 (POGLUT1).
    Nat Commun 8 : 185 (2017). [PMID: 28775322]

[EC created 2020]